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14 results on '"Schoor, M. Van"'

2. The ICRH system for the stellarator Wendelstein 7-X status and prospects.

Author

Ongena, J., Castano-Bardawil, D., Crombé, K., Kazakov, Ye. O., Schweer, B., Stepanov, I., Schoor, M. Van, Vervier, M., Krämer-Flecken, A., Neubauer, O., Nicolai, D., Satheeswaran, G., Offermanns, G., Hollfeld, K. P., Bensdorf, A., Dinklage, A., Hartmann, D., Kallmeyer, J. P., and Wolf, R. C.

Subjects
STELLARATORS, ANTENNAS (Electronics), CLIMATE research, TEST design, PLASMA physics, MILITARY education
Abstract

The ICRH antenna for the stellarator Wendelstein 7-X (W7-X) foreseen for heating, fast particle production, plasma start-up and wall conditioning in W7-X, is designed to handle powers up to 1.5MW in pulses lasting a maximum of 10 seconds for the frequency range 25-38 MHz. Construction and testing of the ICRH antenna took place at the Institute for Energy and Climate Research/Plasmaphysics (IEK-4) and the Central Institute for Engineering, Electronics and Analytics (ZEA-1) of the Research Centre Jülich, in an intense collaboration with the Laboratory for Plasma Physics of the Royal Military Academy in Brussels (LPP-ERM/KMS). Following the successful construction and testing phase, the ICRH antenna has been installed in W7-X and is currently in its commissioning phase. The purpose of this paper is to provide an overview of the design, construction, and installation process of the antenna, as well as the plans for experiments with the ICRH system in the upcoming months. [ABSTRACT FROM AUTHOR]

Published
2023
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3. Progress with applications of three-ion ICRF scenarios for fusion research: A review

Author

Kazakov, Ye. O., Ongena, J., Nocente, M., Bobkov, V., Garcia, J., Kiptily, V. G., Schneider, M., Wukitch, S., Wright, J. C., Dreval, M., Kirov, K. K., Mazzi, S., Ochoukov, R., Sharapov, S. E., Štancar, Ž., Weisen, H., Baranov, Y., Baruzzo, M., Bierwage, A., Bilato, R., Chomiczewska, A., Coelho, R., Craciunescu, T., Crombé, K., Delabie, E., Luna, E. de la, Dumont, R., Dumortier, P., Durodié, F., Eriksson, J., Fitzgerald, M., Galdon-Quiroga, J., Gallart, D., Garcia-Munoz, M., Giacomelli, L., Giroud, C., Gonzalez-Martin, J., Hakola, A., Henriques, R., Jacquet, P., Jepu, I., Johnson, T., Kappatou, A., Keeling, D., King, D., Klepper, C., Lauber, Ph., Lennholm, M., Lerche, E., Lomanowski, B., Lowry, C., Mantsinen, M. J., Maslov, M., Menmuir, S., Monakhov, I., Nabais, F., Nave, M. F. F., Noble, C., Panontin, E., Pinches, S. D., Polevoi, A. R., Rigamonti, D., Sahlberg, A., Salewski, M., Schneider, P. A., Sheikh, H., Shinohara, K., Siren, P., Sumida, S., Thorman, A., Tinguely, R. A., Valcarcel, D., Van Eester, D., Schoor, M. Van, Varje, J., Weiland, M., and Wendler, N.

Published
2023
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4. The ICRH system for the stellarator Wendelstein 7-X

Author

Ongena, J., primary, Messiaen, A., additional, Kazakov, Ye.O., additional, Schweer, B., additional, Stepanov, I., additional, Vervier, M., additional, Crombé, K., additional, Schoor, M. Van, additional, Borsuk, V., additional, Castaño-Bardawil, D., additional, Kraemer-Flecken, A., additional, Hollfeld, K. P., additional, Offermanns, G., additional, Hartmann, D. A., additional, Kallmeyer, J. P., additional, and Wolf, R. C., additional

Published
2020
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5. Journée 'Civilisations atlantiques & Archéosciences'

Author

Koryakova, L., Daire, Marie-Yvane, Schoor M., Van, Civilisations atlantiques & Archéosciences (C2A), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Ministère de la Culture et de la Communication (MCC)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA), Université de Nantes (UN)-Université de Nantes (UN), Ministère de la Culture et de la Communication (MCC)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA), Université de Nantes (UN)-Université de Nantes (UN)-Université de Rennes 2 (UR2), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES), Université de Rennes (UR)-Ministère de la Culture et de la Communication (MCC)-Université de Rennes 2 (UR2)-Centre National de la Recherche Scientifique (CNRS)-Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA), Université de Nantes - UFR Histoire, Histoire de l'Art et Archéologie (UFR HHAA), and Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Ministère de la Culture et de la Communication (MCC)

Subjects
enclos, Age du Fer, [SHS.ARCHEO]Humanities and Social Sciences/Archaeology and Prehistory, habitat, nécropole, Eurasie, Sibérie
Published
2003

8. Influence of the dynamic ergodic divertor on transport properties in TEXTOR

Author

Finken, K.H, primary, Unterberg, B, additional, Xu, Y, additional, Abdullaev, S.S, additional, Jakubowski, M, additional, Lehnen, M, additional, Bock, M.F.M. de, additional, Bozhenkov, S, additional, Brezinsek, S, additional, Busch, C, additional, Classen, I.G.J, additional, Coenen, J.W, additional, Harting, D, additional, Hellermann, M. von, additional, Jachmich, S, additional, Jaspers, R.J.E, additional, Kikuchi, Y, additional, Krämer-Flecken, A, additional, Liang, Y, additional, Mitri, M, additional, Peleman, P, additional, Pospieszczyk, A, additional, Reiser, D, additional, Reiter, D, additional, Samm, U, additional, Schega, D, additional, Schmitz, O, additional, Soldatov, S, additional, Schoor, M. Van, additional, Vergote, M, additional, Weynants, R.R, additional, Wolf, R, additional, Zimmermann, O, additional, and Team, the TEXTOR, additional

Published
2007
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9. Turbulent transport reduction byE Bvelocity shear during edge plasma biasing: recent experimental results

Author

Oost, G Van, primary, Ad mek, J, additional, Antoni, V, additional, Balan, P, additional, Boedo, J A, additional, Devynck, P, additional,  uran, I, additional, Eliseev, L, additional, Gunn, J P, additional, Hron, M, additional, Ionita, C, additional, Jachmich, S, additional, Kirnev, G S, additional, Martines, E, additional, Melnikov, A, additional, Schrittwieser, R, additional, Silva, C, additional, St ckel, J, additional, Tendler, M, additional, Varandas, C, additional, Schoor, M Van, additional, Vershkov, V, additional, and Weynants, R R, additional

Published
2003
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12. Turbulent transport reduction by <iopmath latex="$\hbox{\bit E}\times\hbox{\bit B}$">E×B</iopmath> velocity shear during edge plasma biasing: recent experimental results

Author

Oost, G Van, Adámek, J, Antoni, V, Balan, P, Boedo, J A, Devynck, P, &Dcheck;uran, I, Eliseev, L, Gunn, J P, Hron, M, Ionita, C, Jachmich, S, Kirnev, G S, Martines, E, Melnikov, A, Schrittwieser, R, Silva, C, Stöckel, J, Tendler, M, Varandas, C, Schoor, M Van, Vershkov, V, and Weynants, R R

Abstract

Experiments in the tokamaks TEXTOR, CASTOR, T-10 and ISTTOK, as well as in the reversed field pinch RFX have provided new and complementary evidence on the physics of the universal mechanism of E×B velocity shear stabilization of turbulence, concomitant transport barrier formation and radial conductivity by using various edge biasing techniques. In TEXTOR the causality between transport reduction and induced electric fields in the edge has been for the first time clearly demonstrated. The high electric field gradients have been identified as the cause for the quenching of turbulent cells. A quantitative analysis of the measured transport reduction is in good agreement with theoretical predictions. The scaling of plasma turbulence suppression with velocity shear has been established, revealing the density-potential cross-phase as a key element. Reduction in poloidal electric field, temperature, and density fluctuations across the shear layer lead to a reduction of the anomalous conducted and convected heat fluxes resulting in an energy transport barrier that is measured directly. In CASTOR the biasing electrode is placed at the separatrix in a non-intrusive configuration which has demonstrated strongly sheared electric fields and consequent improvement of the global particle confinement, as predicted by theory. The impact of sheared E×B flow on edge turbulent structures has been measured directly using a comprehensive set of electrostatic probe arrays as well as emissive probes. Measurements with a full poloidal Langmuir probe array have revealed quasi-coherent electrostatic waves in the SOL with a dominant mode number equal to the edge safety factor. In T-10 edge biasing is clearly improving the global performance of ECR heated discharges. Reflectometry and heavy ion beam probe measurements show the existence of a narrow plasma layer with strong suppression of turbulence. On ISTTOK, the influence of alternating positive and negative electrode and (non-intrusive) limiter biasing has been compared. Electrode biasing is found to be more efficient in modifying the radial electric field Er and confinement, limiter biasing acting mainly on the SOL. In the RFX reversed field pinch it has been demonstrated that also in RFPs biasing can increase the local E×B velocity shear in the edge region, and hence substantially reduce the local turbulence driven particle flux mainly due to a change in the relative phase between potential and density fluctuations.

Published
2003

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